Implement training for mec3

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@265 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 15 insertions, 0 deletions

diff --git a/mec3.h b/mec3.h
index 9f0256b..3df3f50 100755
--- a/mec3.h
+++ b/mec3.h
@@ -225,4 +225,19 @@ static inline echo_can_state_t *echo_can_create(int taps, int adaption_mode)
 	return ec;
 }
 
+static inline int echo_can_traintap(echo_can_state_t *ec, int pos, short val)
+{
+	/* Reset hang counter to avoid adjustments after
+	   initial forced training */
+	ec->hcntr = ec->taps << 1;
+	if (pos >= ec->taps)
+		return 1;
+	ec->a_i[pos] = val << 17;
+	ec->a_s[pos] = val << 1;
+	if (++pos >= ec->taps)
+		return 1;
+	return 0;
+}
+
+
 #endif